Spotify is a Swedish music streaming service offering digitally restricted streaming of selected music from a range of major and independent record labels, including Sony, EMI, Warner Music Group, and Universal. Launched in October 2008 by Swedish startup Spotify AB

A six month free trial period is activated upon initial login with a Facebook account, where a user can listen to an unlimited amount of music supported by visual and radio-style advertising. After the trial, Spotify will have a listening limit of ten hours per month. An "Unlimited" subscription removes advertisements and time limits and a "Premium" subscription introduces extra features such as higher bitrate streaming, offline access to music and mobile app access. An active Facebook account is required to use Spotify.

GlusterFS is an open source, distributed file system capable of scaling to several petabytes (actually, 72 brontobytes!) and handling thousands of clients. GlusterFS clusters together storage building blocks over Infiniband RDMA or TCP/IP interconnect, aggregating disk and memory resources and managing data in a single global namespace. GlusterFS is based on a stack-able user space design and can deliver exceptional performance for diverse workloads.

Unity Mail is an E-Mail count and notifications application for Ubuntu Unity desktop, is a script that checks your mail on any IMAP4-compatible server and displays a notification bubble when you get new mail;

gLabels is a program for creating labels and business cards for the GNOME desktop environment. It is designed to work with various laser/ink-jet peel-off label and business card sheets that you'll find at most office supply stores. gLabels is free software and is distributed under the terms of the GNU General Public License (GPL).

Installing Glabels:
Glabels package is available in the default available repository under Ubuntu, you can search "Glabels" and install it using Software Center or can install it using command:

sudo apt-get install glabels

After successful installation, you can open the glabels application from Unity 'Dash'

Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML).

Thus, “Markdown” is two things:
* A plain text formatting syntax
* A software tool, written in Perl, that converts the plain text formatting to HTML.

reStructuredText is an easy-to-read, what-you-see-is-what-you-get plain text markup syntax and parser system. It is useful for in-line program documentation (such as Python docstrings), for quickly creating simple web pages, and for standalone documents. reStructuredText is designed for extensibility for specific application domains. The reStructuredText parser is a component of Docutils.